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1. 发明授权

US07359470B2 Minimizing feedback rate for channel state information in MIMO systems 有权
标题翻译：最小化MIMO系统中信道状态信息的反馈速率
公开(公告)号：US07359470B2
公开(公告)日：2008-04-15
申请号：US10939284
申请日：2004-09-10
申请人： Andreas F. Molisch , Jianxuan Du , Ye Li , Daqing Gu , Jinyun Zhang
发明人： Andreas F. Molisch , Jianxuan Du , Ye Li , Daqing Gu , Jinyun Zhang
IPC分类号： H04L7/02
CPC分类号： H04L1/0687
摘要： A method minimizes a rate for feeding back channel state information from a receiver to a transmitter in a multi-input, multi-output communications systems. A temporal autocorrelation function of the channel between the transmitter and the receiver is determined. A spatial covariance information is estimated of the channel. Then, the minimum rate for feeding back channel state information from the receiver to the transmitter is based on actual channel state information and the estimated spatial covariance information and the temporal autocorrelation function.
摘要翻译：一种方法使在多输入多输出通信系统中将信道状态信息从接收机反馈到发射机的速率最小化。确定发射机和接收机之间的信道的时间自相关函数。估计通道的空间协方差信息。然后，从接收机向发射机反馈信道状态信息的最小速率基于实际信道状态信息和估计的空间协方差信息和时间自相关函数。

2. 发明授权

US07355959B2 Interference suppression for OFDM-based UWB communication 失效
公开(公告)号：US07355959B2
公开(公告)日：2008-04-08
申请号：US10856708
申请日：2004-05-28
申请人： Andreas F. Molisch , Ye Li , Jinyun Zhang
发明人： Andreas F. Molisch , Ye Li , Jinyun Zhang
IPC分类号： H04J11/00
CPC分类号： H04B1/719 , H04L25/022 , H04L25/0224 , H04L27/261
摘要： A method suppresses interference in a time-frequency hopped, ultra wide bandwidth system. Signals corresponding to a transmitted symbol are received. The received signals are frequency demodulated, and a coefficient vector w that minimizes a cost function C ⁡ ( w n ) = 1 ∑ k ⁢ λ  n - k  ⁢ ∑ k ⁢ λ  n - k  ⁢ ⁢  w n H ⁢ x k - c k  2 , is estimated, where λ is a weighting factor between 0, x is a vector representing the received signals, H is a frequency response of a channel used to transmit the symbol, and c is a known training symbol. A coefficient vector, ŵn={circumflex over (R)}n−1{circumflex over (d)}n, is determined, where a correlation matrix for the received signals is R ^ n = 1 ∑ k ⁢ λ  n - k  ⁢ ∑ k ⁢ λ  n - k  ⁢ ⁢ x k ⁢ x k H , and an estimate of a crosscorrelation is d ^ n = 1 ∑ k ⁢ λ  n - k  ⁢ ∑ k ⁢ λ  n - k  ⁢ ⁢ x k ⁢ c k * . The received signals are then combined according to c ^ n = 1 C ⁡ ( w ^ n ) ⁢ w ^ n H ⁢ x n = 1 1 - w ^ n H ⁢ ⁢ d ^ n ⁢ w ^ n H ⁢ x n .

3. 发明授权

US08009580B2 Signaling and training for antenna selection in OFDMA networks 有权
标题翻译： OFDMA网络中天线选择的信令和训练
公开(公告)号：US08009580B2
公开(公告)日：2011-08-30
申请号：US12117219
申请日：2008-05-08
申请人： Zhifeng Tao , Andreas F. Molisch , Philip V. Orlik , Jinyun Zhang , Shigeru Uchida , Kentarou Sawa
发明人： Zhifeng Tao , Andreas F. Molisch , Philip V. Orlik , Jinyun Zhang , Shigeru Uchida , Kentarou Sawa
IPC分类号： H04W4/00
CPC分类号： H04B7/0874 , H04B7/063 , H04B7/0691 , H04L5/0007
摘要： A method selects antennas in an OFDMA wireless network including a base station and a mobile station. The mobile station measures a channel state of a downlink in a downlink subframe using different subsets of available antennas, and selects a subset of receive antennas for downlink reception based on the channel states between the base station and the different subsets of antennas at the mobile station. The base station measures the channel state in an uplink using an uplink subframe received in the base station from the mobile station, and selects a subset of transmit antennas for mobile station's uplink transmission based on the channel states between the base station and different subset of antennas at the mobile station.
摘要翻译：一种方法选择包括基站和移动台的OFDMA无线网络中的天线。移动站使用不同的可用天线子集来测量下行链路子帧中的下行链路的信道状态，并且基于移动站的基站和不同的天线子集之间的信道状态来选择用于下行链路接收的接收天线的子集。基站使用来自移动站的基站中接收到的上行链路子帧来测量上行链路中的信道状态，并且基于基站和不同的天线子集之间的信道状态来选择用于移动台的上行链路传输的发射天线的子集在移动台。

4. 发明授权

US07756099B2 Method and system for selecting antennas adaptively in OFDMA networks 失效
标题翻译：在OFDMA网络中自适应选择天线的方法和系统
公开(公告)号：US07756099B2
公开(公告)日：2010-07-13
申请号：US11777356
申请日：2007-07-13
申请人： Zhifeng Tao , Chun Nie , Neelesh B. Mehta , Andreas F. Molisch , Jinyun Zhang
发明人： Zhifeng Tao , Chun Nie , Neelesh B. Mehta , Andreas F. Molisch , Jinyun Zhang
IPC分类号： H04B7/208
CPC分类号： H04B7/0628 , H04B7/0404 , H04B7/0413 , H04B7/0691 , H04B7/0874 , H04B7/0888 , H04B17/309
摘要： A method selects antennas in an OFDMA network. A channel state of a downlink is measured using a downlink subframe received in a mobile station from a base station. A channel state of an uplink is measured using an uplink subframe received in the base station from the mobile station. Next, the method compares the channel states to determine whether the downlink and the uplink are reciprocal or not. The mobile station can perform receive antenna selection based on the quality of the downlink channel state. The mobile station can also perform transmit antenna selection when instructed by the base station.
摘要翻译：一种方法选择OFDMA网络中的天线。使用从基站在移动台中接收的下行链路子帧来测量下行链路的信道状态。使用从移动站在基站中接收的上行链路子帧来测量上行链路的信道状态。接下来，该方法比较信道状态以确定下行链路和上行链路是否是倒数的。移动台可以基于下行链路信道状态的质量来执行接收天线选择。当基站指示时，移动站也可以执行发射天线选择。

5. 发明授权

US07729659B2 Method for signaling quality of range estimates in UWB devices 有权
标题翻译： UWB设备中信号质量范围估计的方法
公开(公告)号：US07729659B2
公开(公告)日：2010-06-01
申请号：US11454568
申请日：2006-06-16
申请人： Andreas F. Molisch , Jinyun Zhang
发明人： Andreas F. Molisch , Jinyun Zhang
IPC分类号： H04B7/00
CPC分类号： H04W64/00 , G01S13/767 , H04B1/7163 , H04B17/27
摘要： A method signals a quality of range estimates in a UWB network. For each range estimate, a confidence level of a range estimate is signaled, a confidence interval for the range estimate is signaled, and a confidence interval scaling factor for the confidence interval is signaled.
摘要翻译：一种方法用信号通知UWB网络中的距离估计的质量。对于每个范围估计，用信号通知距离估计的置信水平，用信号通知距离估计的置信区间，并且用信号通知置信区间的置信区间缩放因子。

6. 发明申请

US20090225883A1 Analog Beamforming to Reduce Interference in Wimax Networks 有权
标题翻译：模拟波束成形以减少Wimax网络中的干扰
公开(公告)号：US20090225883A1
公开(公告)日：2009-09-10
申请号：US12403025
申请日：2009-03-12
申请人： Philip V. Orlik , Toshiyuki Kuze , Andreas F. Molisch , Zhifeng Tao , Jinyun Zhang
发明人： Philip V. Orlik , Toshiyuki Kuze , Andreas F. Molisch , Zhifeng Tao , Jinyun Zhang
IPC分类号： H04L27/28 , H04W84/00
CPC分类号： H04W72/046 , H04W4/08 , H04W24/10 , H04W72/085
摘要： A base station transmits a set of sounding requests to a set of mobile station (MS) in a cell, using a set of beams, wherein there is one beam for each sounding request. Qualities of sounding signals transmitted by the set of MSs in response to receiving the sounding request are measured, and the set of MSs are grouping into subsets according to the qualities, wherein there is one subset of MSs associated with each beam.
摘要翻译：基站使用一组波束向小区中的一组移动台（MS）发送一组探测请求，其中对于每个探测请求存在一个波束。测量响应于接收到探测请求的MS组发送的探测信号的质量，并且根据质量将MS组合成子集，其中存在与每个波束相关联的MS的一个子集。

7. 发明申请

US20080247370A1 Training Signals for Selecting Antennas and Beams in Mimo Wireless Lans 有权
标题翻译：用于在Mimo无线蓝牙中选择天线和光束的训练信号
公开(公告)号：US20080247370A1
公开(公告)日：2008-10-09
申请号：US12088285
申请日：2005-09-30
申请人： Daqing Gu , Hongyuan Zhang , Jinyun Zhang , Andreas F. Molisch
发明人： Daqing Gu , Hongyuan Zhang , Jinyun Zhang , Andreas F. Molisch
IPC分类号： H04Q7/24
CPC分类号： H04B7/0691 , H04B7/024 , H04B7/0695 , H04B7/0851 , H04B7/0874 , H04B7/088
摘要： A computer implemented method selects antennas in a multiple-input, multiple-output wireless local area network that includes multiple stations, and each station includes a set of antennas. Multiple consecutively transmitted sounding packets are received in a station. Each sounding packet corresponds to a different subset of the set of antennas. A channel matrix is estimated from the multiple consecutively transmitted sounding packets, and a subset of antennas is selected according to the channel matrix.
摘要翻译：计算机实现的方法选择包括多个站的多输入多输出无线局域网中的天线，并且每个站包括一组天线。在站中接收到多个连续发送的探测包。每个探测包对应于该组天线的不同子集。从多个连续发送的探测分组估计信道矩阵，并根据信道矩阵选择天线子集。

8. 发明申请

US20080075007A1 Decentralized and dynamic route selection in cooperative relay networks 失效
标题翻译：协同中继网络中的分散和动态路由选择
公开(公告)号：US20080075007A1
公开(公告)日：2008-03-27
申请号：US11527267
申请日：2006-09-25
申请人： Neelesh B. Mehta , Ritesh Madan , Andreas F. Molisch , Jinyun Zhang
发明人： Neelesh B. Mehta , Ritesh Madan , Andreas F. Molisch , Jinyun Zhang
IPC分类号： H04J3/14 , H04L12/28
CPC分类号： H04W40/22 , H04B7/15592 , H04L45/12 , H04L45/24 , H04W40/08 , Y02D70/122 , Y02D70/324 , Y02D70/39 , Y02D70/446
摘要： A method selects an optimal route in a cooperative relay network including a set of nodes. For each node in a set of nodes of a cooperative relay network, dynamically varying channel state information is determined. A transmission policy based on the dynamically-varying channel state information is selected, in which the transmission policy includes selected nodes forming an optimal route, a transmission mode for each selected node, and a transmission power for each selected node.
摘要翻译：一种方法在包括一组节点的协作中继网络中选择最优路由。对于协作中继网络的一组节点中的每个节点，确定动态变化的信道状态信息。选择基于动态变化的信道状态信息的传输策略，其中传输策略包括形成最佳路由的选定节点，每个选定节点的传输模式以及每个选择节点的传输功率。

9. 发明申请

US20080051149A1 Method and System for Antenna Selection in Wireless Networks 有权
标题翻译：无线网络天线选择方法与系统
公开(公告)号：US20080051149A1
公开(公告)日：2008-02-28
申请号：US11620105
申请日：2007-01-05
申请人： Neelesh B. Mehta , Erdem Bala , Jinyun Zhang , Andreas F. Molisch
发明人： Neelesh B. Mehta , Erdem Bala , Jinyun Zhang , Andreas F. Molisch
IPC分类号： H04B1/02 , H04M1/00 , H04B7/02
CPC分类号： H04B7/061 , H04L1/0026 , H04L1/06 , H04L5/023 , H04L25/0224 , H04L27/261
摘要： A method and system selects a subset of antennas from a set of antennas to transmit user data in a wireless communication system. The user data is transmitted during a first transmission time intervals (TTI) using a first subset of antennas. Pilot tones are transmitted during a second TTI using a second subset of antennas. Corresponding channel qualities are estimated for the first subset of antennas and the second subset of antennas from the user data and the pilot tones. Then, based on the estimating, a best subset of antenna is selected from the first subset of antennas and the second subset of antennas to transmit the user data during a subsequent TTI.
摘要翻译：一种方法和系统从一组天线中选择天线的子集以在无线通信系统中传送用户数据。使用第一天线子集在第一传输时间间隔（TTI）期间发送用户数据。在第二TTI期间使用第二天线子集来传送导频音调。对于天线的第一子集和来自用户数据和导频音的第二子天线子集估计相应的信道质量。然后，基于估计，从天线的第一子集和第二天线子集中选择天线的最佳子集，以在随后的TTI期间发送用户数据。

10. 发明授权

US07826853B2 Cooperative base stations in wireless networks 有权
标题翻译：无线网络中的合作基站
公开(公告)号：US07826853B2
公开(公告)日：2010-11-02
申请号：US11934131
申请日：2007-11-02
申请人： Andreas F. Molisch , Lun Dong , Philip V. Orlik , Jinyun Zhang
发明人： Andreas F. Molisch , Lun Dong , Philip V. Orlik , Jinyun Zhang
IPC分类号： H04W72/00
CPC分类号： H04B7/0678 , H04B7/024 , H04B7/043 , H04B7/0443
摘要： The embodiments of the invention provide an adaptive method for base station cooperation in a wireless network. In a multi-user communications network that includes base stations, and in which each base station is associated with a cell, and in which each cell includes one or more mobile stations, each base station determines pre-coding matrices for full-cooperation, semi-cooperation and non-cooperation. Each base stations also determines a sum rate SRfull for full-cooperation, a sum rate SRsemi for semi-cooperation, and a sum rate SRnon for non-cooperation. Then, each base station selects the pre-coding for full-cooperation, the pre-coding matrices for semi cooperation, or the pre-coding matrices for non cooperation. Each base station transmits signals according to the selected pre-coding matrices.
摘要翻译：本发明的实施例提供了一种用于无线网络中的基站协作的自适应方法。在包括基站并且其中每个基站与小区相关联并且每个小区包括一个或多个移动站的多用户通信网络中，每个基站确定用于全协作的预编码矩阵，半合作不合作。每个基站还确定全面合作的总和速率，半合作的总和SRsemi和不合作的总和速率SRnon。然后，每个基站选择用于全协作的预编码，用于半合作的预编码矩阵，或者用于非合作的预编码矩阵。每个基站根据选择的预编码矩阵发送信号。

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